Herman Miller fake?  

Found em....
They're not in very good shape is why I'd presume the price is so low. Scraped metal, and chunked out leather. What's up with the backs of them? Pretty loose and shabby.

Looks right to me. Chipping...
Looks right to me. Chipping of the arms is not uncommon. The 4 leg base would be "vintage" - the new ones have 5, thought I don't know what year they made the switch.

The arms
could be replaced for around $50, and the leather touched up to blend for almost nothing. As long as the legs weren't all scratched to match. Though the backs look like they've come un-stitched, or have been ripped off.

Hi
It's next to impossible to find vintage chairs without some finish loss on the arms. Unless they haven't been used at all.

That's a pretty bold statement...
Especially applying that to all vintage chairs in general.
You saying you have to buy new only, to not have finish loss? Also, what kind of finish are you talking about? All finishes? For every one chair I see that actually has loss to the finish, I find ten that have only hazing or scuffing and some that might have a few light scratches. Things that could easily be buffed out, or looked over.
Really it's the exact opposite here. Heavily worn, and abused chairs have the look you're describing. Most chairs that have been loved and well cared for, while still being used, maintain their beauty, and finish throughout. That particular model showed 100 in completed, and of the ones that had arms, 90% had little to no wear, not alone complete finish loss, so that tells you right there.
Sorry Woody. I hate to look as though I'm just trying to disagree with you. It just sounds like you're going into the direction of "That's how all original chairs look from age", or "If it's not new, it's going to have damage", and that's simply not true.

Talking about
Aluminum Group chairs.

The 'damage'
is to a lacquer coating on top of the aluminium, - the metal is fine.
This can easily be removed by buffing, then the coating either replaced, or left without, and polished occasionally to suit.

(that was for the OP)
not everyone else that knows WAY more about Eames chairs than I do...

.
Office chairs get banged around, so what? This one looks reasonably presentable and very usable.

I believe
that's what some would call patina. Refinish them? What about the resale value afterwards? 😛
Good save Woody...

Object
Did you see the back of them?

Not a save
Just staying on the topic of this thread.

Sorry Woody
I hate putting lol at the end of every joke. It seems so kiddish. But I was just kiddin around....lol..

Out of
curiosity, I spent about a half hour looking at only 4 leg examples on ebay.
Out of about 40 or so, at least half or more have perfect arms. So they're easily and readily available all day.
Next to impossible seems to depend more on your budget, not availability. Not saying you couldn't find a perfect one at a thrift store for $9.99, but if you want it now, lack of funds will stop you much faster than lack of product.